126results about How to "Adjustable molecular weight" patented technology

The invention relates to a synthetic method of isomeric tridecanol polyoxyethylene ether, belonging to the organic compound synthesis technical field, which uses the materials of isometric tridecanol and ethylene oxide. The synthetic method is characterized in that: firstly, the polymerization reaction is carried out with the boron trifluoride catalyst, and then the isomeric tridecanol polyoxyethylene ether is obtained by the polymerization reaction carried out with the strong alkali catalyst; wherein, the addition of the boron trifluoride adopted in the reaction is 0.1 to 0.6 percent of the weight of the isometric tridecanol, the strong alkali catalyst is one of or the mixture of solid sodium methylate, methanol solution of sodium methylate, KOH and NaOH, the addition of the strong alkali catalyst is 0.05 to 0.2 percent of the weight of isomeric tridecanol polyoxyethylene ether. The synthetic method of isomeric tridecanol polyoxyethylene ether has the advantages that: the synthetic method adopts a two-step reaction technical proposal that: the polymerization reaction is carried out with the boron trifluoride catalyst at first, and then the polymerization reaction is carried out with the strong alkali catalyst, so the isomeric tridecanol polyoxyethylene ether has mild reaction conditions, high yield, no formation of impurities and environment friendly performance.